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WorksheetsPhotosynthesis and Cellular Respiration
Total questions: 40
Worksheet time: 20mins
Which molecule is split during photolysis?
Carbon Dioxide
NADPH
Water
Oxygen
Where do the light-dependent reactions take place?
Stroma
Cytoplasm
Thylakoid membrane
Mitochondria
What is the source of electrons for Photosystem II?
Oxygen
Carbon Dioxide
Water
Glucose
What is the final electron acceptor in the light-dependent reactions?
Oxygen
NADP+
ATP
Chlorophyll
What is the main purpose of the light-dependent reactions?
To produce glucose
To fix Carbon Dioxide
To split water molecules only
To convert light energy into chemical energy (ATP and NADPH)
Which of the following is NOT a product of the light-dependent reactions?
ATP
NADPH
Oxygen
Glucose
What wavelength of light is best absorbed by the Photosystem I?
680 nm
700 nm
720 nm
740 nm
Where does the Calvin Cycle take place?
Thylakoid membrane
Cytoplasm
Stroma of the chloroplast
Inner mitochondrial membrane
Which enzyme is responsible for carbon fixation in the Calvin Cycle?
ATP synthase
RuBisCO
NADP+ reductase
Hexokinase
What is the first stable product formed in the Calvin Cycle?
How many Carbon Dioxide molecules are needed to produce one glucose molecule?
2
3
6
12
What is G3P (glyceraldehyde-3-phosphate) used for in the Calvin Cycle?
It releases oxygen
It absorbs light
It can be used to form glucose and regenerate RuBP
It breaks down water
How many cycles of the Calvin cycle will produce one molecule of glucose?
What is the main purpose of the Calvin cycle?
To produce ATP
To produce oxygen
To convert CO2 into glucose
To split water
What molecule is regenerated at the end of the Calvin cycle to allow the cycle to continue?
ATP
NADPH
RuBP
Glucose
Who proposed the Calvin Cycle?
Robert Calvin
Gemma Calvin Fischer
Calvin Kilmer
Where does glycolysis occur in the cell?
Mitochondria
Nucleus
Cytoplasm
Chloroplast
How may ATP molecules are net gained from glycolysis per glucose molecule?
2
4
6
8
What is the end-product of glycolysis?
Acetyl-CoA
CO2
Pyruvate
Glucose
Which 3-carbon molecules is directly oxidized to produce NADH during glycolysis?
Pyruvate
Lactic Acid
Glyceraldehyde-3-phosphate
Acetyl-CoA
In the absence of oxygen, what process follow glycolysis in many organisms?
Electron transport chain
Fermentation
Krebs cycle
Photosynthesis
TRUE OR FALSE. Glycolysis is an anaerobic process.
TRUE
FALSE
How many molecules of pyruvate are produced from one molecule of glucose in glycolysis?
2
4
6
8
How many NADH molecules are produced per glucose molecule during glycolysis?
None
2
4
6
Where does the Krebs cycle occur?
Cytoplasm
Chloroplast
Mitochondrial matrix
Thylakoid membrane
What is regenerated at the end of the Krebs cycle?
Acetyl-CoA
Glucose
Oxaloacetate
ATP
How many NADH molecules are produced per cycle of the Krebs cycle?
1
2
3
4
What high-energy electron carrier is produced only in the Krebs cycle?
NADPH
NADH
FADH2
ATP
What is the primary purpose of the Krebs Cycle in cellular respiration?
To directly produce large amounts of ATP
To split glucose
To supply electrons for the electron transport chain
To produce oxygen
What happens to the carbon atoms from Acetyl-CoA in the Krebs Cycle?
They form glucose
They become ATP
They are released as CO2
They become water
What is the first product formed in the Krebs Cycle?
Oxaloacetate
Pyruvate
Malate
Citrate
Why is the Krebs Cycle also called the Tricarboxylic cycle?
Where does Oxidative Phosphorylation occur?
Cytoplasm
Mitochondrial matrix
Inner mitochondrial membrane
Outer mitochondrial membrane
What molecule is formed when oxygen accepts electrons at the end of the Electron Transport Chain?
Glucose
Water
Carbon Dioxide
ATP
Which enzyme is responsible for synthesizing ATP during oxidative phosphorylation?
ATPase
NADP+ reductase
RuBisCO
ATP Synthase
What process drives the production of ATP in oxidative phosphorylation?
Chemiosmosis
Substrate-level phosphorylation
Photophosphorylation
Photolysis
What creates the proton (H+) gradient across the inner mitochondrial membrane?
ATP breakdown
Active transport of glucose
Electron movement through ETC complexes
Water formation
What happens as protons flow back into the mitochondrial matrix?
Glucose is formed
ATP is synthesized
Water is split
NADH is oxidized
What is the total theoretical ATP yield from oxidative phosphorylation per glucose molecule?
2-4 ATP
4-8 ATP
26-28 ATP
30-32 ATP
Which of the following is NOT part of Oxidative Phosphorylation?
Electron transport chain
Krebs cycle
Chemiosmosis
ATP synthesis
